1 vote

Harbor River Bridge


Highway US 21 Bridge

South Carolina

Photo taken by Douglas Butler in April 2013


BH Photo #283650


Street View 


Swing bridge over Harbor River on US 21
Beaufort County, South Carolina
Open to traffic
Future prospects
Slated for demolition in fall 2021
Built 1939
Through truss swing
Length of largest span: 171.9 ft.
Total length: 2,851.2 ft. (0.5 mi.)
Deck width: 20.0 ft.
Vertical clearance above deck: 15.0 ft.
Approximate latitude, longitude
+32.40479, -80.45436   (decimal degrees)
32°24'17" N, 80°27'16" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/551311/3585436 (zone/easting/northing)
Quadrangle map:
Saint Helena Sound
Average daily traffic (as of 2017)
Inventory numbers
SC 0720002100200 (South Carolina bridge number)
BH 32005 (Bridgehunter.com ID)
Inspection report (as of October 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 44.2 (out of 100)
View more at BridgeReports.com


Beaufort County, South Carolina (12)
Built 1939 (751)
Built during 1930s (11,436)
Doomed (1,084)
Have street view (26,091)
Movable (2,894)
Navigable waterway (2,128)
Open (38,994)
Owned by state (15,526)
South Carolina (497)
Span length 125-175 feet (4,140)
Swing (1,403)
Through truss (14,558)
Total length over 2500 feet (872)
Truss (31,960)
US 21 (4)

Update Log 

  • April 8, 2020: New photo from Geoff Hubbs
  • April 8, 2020: Updated by Nick Boppel: Doomed
  • May 9, 2016: New Street View added by Douglas Butler
  • December 12, 2015: New Street View added by Douglas Butler
  • December 4, 2014: New Street View added by Alexander D. Mitchell IV
  • May 17, 2014: New photo from Douglas Butler
  • May 4, 2010: New Street View added by Nathan Holth


  • Nathan Holth
  • Douglas Butler
  • Alexander D. Mitchell IV
  • Nick Boppel - nickboppel01 [at] gmail [dot] com
  • Geoff Hubbs


Harbor River Bridge
Posted April 8, 2020, by Nick Boppel (nickboppel01 [at] gmail [dot] com)
Harbor River Bridge - Slated Replacement
Posted March 28, 2016, by Patrick McBriarty (patrick_mcbriarty [at] yahoo [dot] com)

This bridge is scheduled for replacement with a higher fixed bridge viaduct by SCDOT. Construction should begin in the Fall of 2017 and will take approximately three years at an estimated cost of $56 million dollars.

There is a local movement to try and save the bridge, but struggle to find any real historical significance to the old swing bridge. SC has nine moveable bridges, but doubt this is remarkable enough to save from replacement especially since federal funding has been established and the planning and engineering phase was completed in 2014.